Double Glazed Window Repairs
Double glazing can be an investment that is worth it, but can be frustrating when it doesn't work. Most issues can be fixed and you do not have to replace your windows or doors.
Double-glazed windows are made up of two glass panes separated by a very thin gap. This gap is filled with an insulating gas such as argon. This improves the thermal efficiency of windows.
Broken panes

Double-paned windows are less likely to break than single panes of glass, however they are still susceptible to shattering or crack. It's important to fix a broken pane in double glazing as soon as possible in order to avoid moisture and energy loss.
Depending on the extent of the crack you may decide to make a temporary fix or opt for a more intensive epoxy repair. A temporary repair can stop further cracks from occurring and protect against rain and cold air. A more extensive repair can strengthen the crack and provide an improved seal.
To replace a broken double-pane windows, first remove the frame from the sash, and then set it on the table. Then, put a grid of duct tape over the pane to keep any glass pieces from falling off when you remove it. Once the tape is in place then pull the old double pane glass from the frame. Next, clean the grooves and rabbet using a wire brush and vacuum or wipe with a damp cloth. Remove the wood molding, if required and scrape off any putty or metal glazing points prior to putting in the new pane. Apply silicone caulk into the grooves and rabbets to ensure a secure fit.
If you're planning to repair the cracks in your window yourself, start by sanding the rabbet until it's smooth and free of gunk or paint. Heating guns can be used to soften any putty or glazing points. After the rabbet has been cleaned the putty knife can be used to push the rope of putty into place. Make sure that the putty has an even thickness and that it presses equally against the glass and frame.
If you're looking for a long-term solution, you can opt for an epoxy repair instead of replacing. This method requires more effort and a longer wait time however it is more appealing and last longer than a short-term repair.
Condensation
Condensation is one of the most common double glazed window problems, but it doesn't necessarily mean your windows aren't working properly. The fact that your windows show condensation is actually a positive indicator that your double glazing is performing what it is supposed to do, keeping the cold out and the warmth in.
When you notice condensation developing on the outside of your windows, it is actually water vapor coming from the inside of your home that has cooled down and condensed on the surface of the glass. It's a natural process and it's not something that's likely to cause damage to your windows unless you allow it sit on the glass for too long.
The reason for condensation inside is usually a lack of humidity or low temperatures in the room. This creates cold surfaces, like windows and doors, to attract moisture that is high in dewpoint (the temperature at which water turns into a liquid). It is also commonplace in bathrooms and kitchens due to the steam that comes from kettles, showers, and hot pots and pans used during cooking.
Do not hang wet clothes near windows and make sure your uPVC frames are properly ventilated to prevent moisture buildup. Also, ensure that your double glazed windows are properly insulated and fitted, with the proper gap (6mm is best) for optimum energy efficiency. You can also try adding air vents that are one-way to your windows to improve insulation. If you're still seeing condensation, there's an issue with gaskets or seals and this is definitely an issue that requires the expertise of a professional.
Draughts
A window that is drafty is an indication that the seal between the glass panes of your double-glazing has begun to leak and is likely to need replacing. This could affect the insulation of your home and result in an increase in energy bills, so it's important to act fast when you spot this problem.
Window repair services can replace your sealed unit, restoring energy efficiency to your windows. They can also replace existing frames with energy-saving features, such glass units that are filled with argon, as well as thermal spacer bars to reduce heat loss and reduce your heating bills.
Draughts can also be caused by issues with the locking mechanisms of your double glazed windows, so it's worth getting the windows checked. Older uPVC window locks are notorious for becoming stiff with time, but it's easy to fix this issue by regular lubrication using a specialist uPVC cleaning product.
A professional double glazing company will ensure that the repair is done properly. They'll have the appropriate tools to make sure that your window is completely sealed and watertight. They'll also be able fix any other damage to your frame, so you can enjoy your beautiful new double glazing with confidence.
Double-glazed windows are tough and long-lasting, however they can develop issues due to weather or wear and tear. If you spot any of the issues mentioned above contact your local double glazing repair service immediately to get them fixed as soon as you can. You'll be happy that you did it. A double glazing installation that is repaired properly will give your home a an immediate sense of quality, and will also save you money on energy bills!
Smudging
Double-glazed windows consist of two separate panes, with a spacer or dense gas between. This creates a solid seal to prevent heat from escaping through the frame. They are a great way to save energy and reduce the carbon footprint of your home. Double glazing may have many issues that could affect its performance and longevity. This includes fog, condensation, and being difficult to close or open.
If you are having trouble opening your double-glazed windows, it could be because of the weather. Repair My Windows And Doors could also be due to a issue with the hinges, or handles. Wiping them clean with cold water and lubricating them may help ease the problem, but you must contact the company you bought your windows from as soon as possible to have it fixed.
If your windows or doors have dropped or sagged over time, this is another common issue that can be fixed by a trained professional. It is always worth checking your warranty to determine if there are any repairs covered.
Fogged and foggy glass can be caused by moisture between the panes. It's typically the result of seals that are not working or a double-glazing unit that needs to be replaced. This is a simple fix that can be done without having to replace the entire window.
To address this issue, a technician will make tiny holes to vent out any moisture that is trapped between the glass panes and the rest of the window. After the moisture has gone the new anti-fog coating is applied and the window sealed. Sometimes, the window will need to be removed prior to this happens but most of the time it can be carried out from the inside of the home.
Mist
Mist can be a major problem with older double glazing, particularly when it is present on the outside and inside of the windows. This is caused by an issue with the seal designed to keep air and moisture between the two panes. The seal is made during the production of double-glazed units by sealing both panes using an airtight polysulphide seal or butyl seal around the edges and spacer bar. This is intended to provide insulation and keep the window from leaks. If you have misted double glazed windows, it may be a challenge to remove and clean, since you will need to break the hardened seal to clean.
The issue with mists is that they permit moisture to enter and cause condensation between the glass panes. This is because there is an enormous temperature difference between the internal and external surfaces of the glass. The moisture then gets trapped in the spaces and creates the appearance of a milky white. This can be very unattractive and difficult to remove.
There are a number of companies who claim that they can fix your double-glazed windows that are misting by drilling holes into the unit and injecting chemicals into the holes which then absorbs the moisture inside. It's not permanent solution and it's easier to replace the entire double-glazed unit.
It is recommended to keep your windows clean and conditioned regularly. It's also an excellent idea to install extractor fans in bathrooms and kitchens and wipe windows with a damp cloth to prevent the accumulation of moisture. If you're not able to completely avoid the issue we suggest replacing your double-glazed units with A-rated ones to improve the efficiency of energy.